This is one of those "it's correct from a certain point of view" things, but even if somebody takes the view it's correct the fact the country is technically younger than most forum posters in no way legitimises Putin's decision to try and reconquer it 30+ years after the fact. People walking the "oh it used to be part of Russia until the 90's, they're just taking it back" line have some serous reasoning deficiencies.So apparently Ukraine wasn't a thing until 1989 and it was created by RussiaAre they really this thick or is lying to their base got some other end game?
But to address their stance, essentially Ukraine was a region of Russia that during the USSR era was promoted to the status of an independent state/member of the USSR (albeit still completely ruled/owned by Moscow) and then became an independent sovereign country with the disintegration of the USSR (the same thing happening to Belarus and Georgia). As stated though the fact it belonged to Russia for 100+ years prior to 1992 doesn't change the fact it's been it's own country for 30+ years and any claim they had to it disappeared when 92% of Ukrainians voted to become an independent country.